| Filed On | Filing |
|---|---|
| 30 Mar 2023 | SCHEDULE 13G |
| 09 Mar 2022 | SC 13G |
| 05 Jan 2022 | SCHEDULE 13G |
| 11 May 2021 | SC 13G |
| 14 Sep 2016 | SC 13G |
| 12 Feb 2015 | SCHEDULE 13G |
| 18 Mar 2014 | MECHANICAL TECHNOLOGY, INC. SCHEDULE 13G |
| 14 Feb 2007 | SCHEDULE 13G |
| 26 Dec 2006 | BENEFICIAL OWNERSHIP OF 5% OR MORE |
| 22 Dec 2006 | BENEFICIAL OWNERSHIP OF 5% OR MORE |
| 19 May 2006 | BENEFICIAL OWNERSHIP OF 5% OR MORE |
| 14 Feb 2005 | SCHEDULE 13G |
| 14 Feb 2001 | SCHEDULE 13G |
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